Warm Start stumble/multiple attempts... where to start looking?

[hagar]

Hagar! Long time no talk (since I had that KR issue)

Is this the adjustment, or somewhere else?

View attachment 445574

That is the primary culprit right there! Change all the 100s to 85s as a start, and it should fire up much much better when hot.

 

[hagar]

See if 85 helps. If it gets better but still struggles, go to 82. If it gets better at 82 and still struggles, go to 80. Go until it stops getting better and starts getting worse, then back up to the best point. If it isn't starting perfect at that point when hot, let me know and we can go into the throttle opening tables. The modern stuff is all about balancing the throttle opening with crank fuel, and then how it comes down from the points you find that get it started. The ve cranking should fix it with the small cam, but not all small cams act the same. Sometimes things just stack up weird with cams and air intakes and exhausts and stuff. Normally straight forward, but can once in a while need a little more attention. I am sure this is the case with your tuner. Just one of those ones that normally works well, but things in your combo are creating an abnormality.

 

[Charlie207]

See if 85 helps. If it gets better but still struggles, go to 82. If it gets better at 82 and still struggles, go to 80. Go until it stops getting better and starts getting worse, then back up to the best point. If it isn't starting perfect at that point when hot, let me know and we can go into the throttle opening tables. The modern stuff is all about balancing the throttle opening with crank fuel, and then how it comes down from the points you find that get it started. The ve cranking should fix it with the small cam, but not all small cams act the same. Sometimes things just stack up weird with cams and air intakes and exhausts and stuff. Normally straight forward, but can once in a while need a little more attention. I am sure this is the case with your tuner. Just one of those ones that normally works well, but things in your combo are creating an abnormality.

Is there a more generic suggestion I can give my tuner - BlackBear Performance - to look into for the warm-start stumbles, that won't bug them? I still haven't heard back, but assume they are off for the holidays, which is fine.

I'm not really a fan of having the data locked down so I can't even see what I'm logging. And, even worse, there are literally zeros dyno-tuners within any reasonable distance.

 

[hagar]

Is there a more generic suggestion I can give my tuner - BlackBear Performance - to look into for the warm-start stumbles, that won't bug them? I still haven't heard back, but assume they are off for the holidays, which is fine.

I'm not really a fan of having the data locked down so I can't even see what I'm logging. And, even worse, there are literally zeros dyno-tuners within any reasonable distance.

He will know how to fix it. No need to tell him what to do, it's super common knowledge for someone that tunes as much as him. I was giving some DIY advice if it was changeable on your end, if he has it locked down, all you can do is wait.

Locking tunes is a choice some make, I have personally never locked a tune in my life. You either know what you are doing or you don't. I have done tunes for people while knowing they fully intend to try and reverse engineer it, it has never once created a competition for me. The numbers are useless if you don't fully understand what they all mean, you can't just input numbers from one tune into another, unless you want just a generic tune like a handheld store bought, for a near stock vehicle. I think some people do it also so it doesn't make them look bad if someone messes with things and breaks something, but as far as I am concerned, you paid me, it's yours to do what you want with. I of course tell people to not mess with it, but it's their vehicle to do what they want. I bet 50 percent of the stuff i tune these days has its own hp tuners because people thought they wanted to learn how to tune, but couldn't figure it out. Lots of them have the training books and everything. If you know how to tune, and read those books, it's comical the info they give you. It's like giving a mechanic a single screw driver, and telling him to rebuild an engine.

 

[mikez71]

I have seen a couple 'tuning school' videos that don't seem to tell you anything.
It's like they're reading the descriptions off of the HPtuners program.. (can't do, teach!)

I've heard good things about cringers videos (from others that seem to know what they're doing... )
Still need to watch them, but I think it's over my head..

SilverSurfer77

This channel is filled with really neat stuff.

www.youtube.com

"adjust cranking VE" (Volumetric Efficiency) ... @hagar said.
Thanks for that hagar!